java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:49,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:49,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:50,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:50,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:50,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:50,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:50,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:50,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:50,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:50,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:50,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:50,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:50,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:50,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:50,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:50,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:50,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:50,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:50,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:50,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:50,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:50,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:50,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:50,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:50,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:50,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:50,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:50,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:50,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:50,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:50,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:50,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:50,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:50,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:50,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:50,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:50,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:50,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:50,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:50,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:50,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:02:50,095 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:50,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:50,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:50,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:50,100 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:50,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:50,101 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:50,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:50,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:50,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:50,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:50,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:50,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:50,102 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:50,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:50,102 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:50,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:50,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:50,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:50,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:50,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:50,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:50,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:50,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:50,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:50,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:50,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:50,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:50,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:02:50,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:50,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:50,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:50,395 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:50,396 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:50,396 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2019-10-13 23:02:50,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc2dd7d9/cbfe01bbb7834279ba06860543258875/FLAG1f967396e [2019-10-13 23:02:51,002 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:51,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2019-10-13 23:02:51,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc2dd7d9/cbfe01bbb7834279ba06860543258875/FLAG1f967396e [2019-10-13 23:02:51,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdc2dd7d9/cbfe01bbb7834279ba06860543258875 [2019-10-13 23:02:51,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:51,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:51,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:51,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:51,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:51,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:51" (1/1) ... [2019-10-13 23:02:51,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef6259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:51, skipping insertion in model container [2019-10-13 23:02:51,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:51" (1/1) ... [2019-10-13 23:02:51,313 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:51,407 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:52,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:52,121 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:52,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:52,420 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:52,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52 WrapperNode [2019-10-13 23:02:52,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:52,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:52,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:52,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:52,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... [2019-10-13 23:02:52,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:52,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:52,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:52,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:52,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:52,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:52,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:52,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:52,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:52,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:52,730 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:52,731 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:52,733 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:52,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:52,735 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:52,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:52,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:52,743 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:52,743 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:52,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:52,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:52,744 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:52,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:52,746 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:52,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:52,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:52,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:52,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:52,747 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:52,748 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:52,749 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:52,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:52,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:52,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:52,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:52,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:52,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:52,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:52,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:52,752 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:52,754 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:52,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:52,758 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:52,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:52,759 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:52,759 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:52,765 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:52,766 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:52,767 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:57,215 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:57,216 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:57,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:57 BoogieIcfgContainer [2019-10-13 23:02:57,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:57,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:57,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:57,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:57,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:51" (1/3) ... [2019-10-13 23:02:57,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1127a8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:57, skipping insertion in model container [2019-10-13 23:02:57,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:52" (2/3) ... [2019-10-13 23:02:57,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1127a8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:57, skipping insertion in model container [2019-10-13 23:02:57,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:57" (3/3) ... [2019-10-13 23:02:57,227 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2019-10-13 23:02:57,237 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:57,246 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:57,257 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:57,296 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:57,296 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:57,296 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:57,296 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:57,296 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:57,297 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:57,297 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:57,297 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states. [2019-10-13 23:02:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 23:02:57,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:57,359 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:57,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash -3497016, now seen corresponding path program 1 times [2019-10-13 23:02:57,378 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:57,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917801940] [2019-10-13 23:02:57,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:57,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:57,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:58,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917801940] [2019-10-13 23:02:58,101 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:58,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:02:58,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065175279] [2019-10-13 23:02:58,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:02:58,107 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:02:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:58,123 INFO L87 Difference]: Start difference. First operand 538 states. Second operand 8 states. [2019-10-13 23:02:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:58,279 INFO L93 Difference]: Finished difference Result 829 states and 1286 transitions. [2019-10-13 23:02:58,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:58,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-13 23:02:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:58,302 INFO L225 Difference]: With dead ends: 829 [2019-10-13 23:02:58,302 INFO L226 Difference]: Without dead ends: 452 [2019-10-13 23:02:58,310 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-10-13 23:02:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 417. [2019-10-13 23:02:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-13 23:02:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 624 transitions. [2019-10-13 23:02:58,398 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 624 transitions. Word has length 115 [2019-10-13 23:02:58,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:58,399 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 624 transitions. [2019-10-13 23:02:58,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:02:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 624 transitions. [2019-10-13 23:02:58,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:02:58,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:58,408 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:58,408 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1674674738, now seen corresponding path program 1 times [2019-10-13 23:02:58,409 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:58,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120156487] [2019-10-13 23:02:58,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:58,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:58,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:58,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120156487] [2019-10-13 23:02:58,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:58,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:58,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566053080] [2019-10-13 23:02:58,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:58,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:58,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:58,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:58,751 INFO L87 Difference]: Start difference. First operand 417 states and 624 transitions. Second operand 7 states. [2019-10-13 23:03:02,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:02,116 INFO L93 Difference]: Finished difference Result 1260 states and 1955 transitions. [2019-10-13 23:03:02,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:03:02,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-13 23:03:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:02,126 INFO L225 Difference]: With dead ends: 1260 [2019-10-13 23:03:02,126 INFO L226 Difference]: Without dead ends: 896 [2019-10-13 23:03:02,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:03:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2019-10-13 23:03:02,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 869. [2019-10-13 23:03:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2019-10-13 23:03:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1350 transitions. [2019-10-13 23:03:02,201 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1350 transitions. Word has length 120 [2019-10-13 23:03:02,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:02,202 INFO L462 AbstractCegarLoop]: Abstraction has 869 states and 1350 transitions. [2019-10-13 23:03:02,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1350 transitions. [2019-10-13 23:03:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:03:02,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:02,206 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:02,207 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:02,207 INFO L82 PathProgramCache]: Analyzing trace with hash -721454288, now seen corresponding path program 1 times [2019-10-13 23:03:02,207 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:02,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543769541] [2019-10-13 23:03:02,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:02,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543769541] [2019-10-13 23:03:02,394 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:02,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:03:02,395 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112992113] [2019-10-13 23:03:02,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:03:02,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:02,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:03:02,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:02,396 INFO L87 Difference]: Start difference. First operand 869 states and 1350 transitions. Second operand 5 states. [2019-10-13 23:03:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:02,475 INFO L93 Difference]: Finished difference Result 1370 states and 2143 transitions. [2019-10-13 23:03:02,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:02,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-13 23:03:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:02,487 INFO L225 Difference]: With dead ends: 1370 [2019-10-13 23:03:02,487 INFO L226 Difference]: Without dead ends: 891 [2019-10-13 23:03:02,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2019-10-13 23:03:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 881. [2019-10-13 23:03:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2019-10-13 23:03:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1365 transitions. [2019-10-13 23:03:02,564 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1365 transitions. Word has length 124 [2019-10-13 23:03:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:02,566 INFO L462 AbstractCegarLoop]: Abstraction has 881 states and 1365 transitions. [2019-10-13 23:03:02,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:03:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1365 transitions. [2019-10-13 23:03:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:03:02,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:02,577 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:02,578 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1564514424, now seen corresponding path program 1 times [2019-10-13 23:03:02,578 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:02,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574561714] [2019-10-13 23:03:02,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:03,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574561714] [2019-10-13 23:03:03,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:03,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:03,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516431604] [2019-10-13 23:03:03,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:03,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:03,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:03,023 INFO L87 Difference]: Start difference. First operand 881 states and 1365 transitions. Second operand 8 states. [2019-10-13 23:03:06,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:06,075 INFO L93 Difference]: Finished difference Result 1856 states and 2884 transitions. [2019-10-13 23:03:06,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:06,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-13 23:03:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:06,095 INFO L225 Difference]: With dead ends: 1856 [2019-10-13 23:03:06,095 INFO L226 Difference]: Without dead ends: 1269 [2019-10-13 23:03:06,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2019-10-13 23:03:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1219. [2019-10-13 23:03:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2019-10-13 23:03:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1849 transitions. [2019-10-13 23:03:06,192 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1849 transitions. Word has length 128 [2019-10-13 23:03:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:06,194 INFO L462 AbstractCegarLoop]: Abstraction has 1219 states and 1849 transitions. [2019-10-13 23:03:06,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1849 transitions. [2019-10-13 23:03:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:03:06,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:06,198 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:06,199 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:06,199 INFO L82 PathProgramCache]: Analyzing trace with hash 38619959, now seen corresponding path program 1 times [2019-10-13 23:03:06,199 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:06,200 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996423523] [2019-10-13 23:03:06,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:06,200 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:06,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:06,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996423523] [2019-10-13 23:03:06,476 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:06,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:06,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257985130] [2019-10-13 23:03:06,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:06,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:06,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:06,480 INFO L87 Difference]: Start difference. First operand 1219 states and 1849 transitions. Second operand 7 states. [2019-10-13 23:03:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:06,703 INFO L93 Difference]: Finished difference Result 2288 states and 3556 transitions. [2019-10-13 23:03:06,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:06,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:03:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:06,714 INFO L225 Difference]: With dead ends: 2288 [2019-10-13 23:03:06,715 INFO L226 Difference]: Without dead ends: 1219 [2019-10-13 23:03:06,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-10-13 23:03:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2019-10-13 23:03:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2019-10-13 23:03:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1817 transitions. [2019-10-13 23:03:06,789 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1817 transitions. Word has length 131 [2019-10-13 23:03:06,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:06,790 INFO L462 AbstractCegarLoop]: Abstraction has 1219 states and 1817 transitions. [2019-10-13 23:03:06,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1817 transitions. [2019-10-13 23:03:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 23:03:06,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:06,794 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:06,795 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash -987124071, now seen corresponding path program 1 times [2019-10-13 23:03:06,795 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:06,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554118233] [2019-10-13 23:03:06,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:06,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:06,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:06,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554118233] [2019-10-13 23:03:06,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:06,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:07,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991922377] [2019-10-13 23:03:07,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:07,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:07,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:07,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:07,001 INFO L87 Difference]: Start difference. First operand 1219 states and 1817 transitions. Second operand 7 states. [2019-10-13 23:03:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:09,967 INFO L93 Difference]: Finished difference Result 2157 states and 3226 transitions. [2019-10-13 23:03:09,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:09,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-13 23:03:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:09,977 INFO L225 Difference]: With dead ends: 2157 [2019-10-13 23:03:09,977 INFO L226 Difference]: Without dead ends: 1289 [2019-10-13 23:03:09,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2019-10-13 23:03:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1246. [2019-10-13 23:03:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2019-10-13 23:03:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1851 transitions. [2019-10-13 23:03:10,041 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1851 transitions. Word has length 133 [2019-10-13 23:03:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:10,042 INFO L462 AbstractCegarLoop]: Abstraction has 1246 states and 1851 transitions. [2019-10-13 23:03:10,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1851 transitions. [2019-10-13 23:03:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:10,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:10,046 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:10,046 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:10,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1327241965, now seen corresponding path program 1 times [2019-10-13 23:03:10,047 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:10,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491923099] [2019-10-13 23:03:10,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:03:10,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491923099] [2019-10-13 23:03:10,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:10,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 23:03:10,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248701067] [2019-10-13 23:03:10,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 23:03:10,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 23:03:10,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-10-13 23:03:10,586 INFO L87 Difference]: Start difference. First operand 1246 states and 1851 transitions. Second operand 26 states.